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Irruputuncu volcano

stratovolcano 5163 m / 16,939 ft
Northern Chile, Bolivia and Argentina, South America, -20.73°S / -68.55°W
Current status: dormant (1 out of 5)
Irruputuncu volcano books
Typical eruption style: explosive/effusive
Irruputuncu volcano eruptions: 1995
TimeMag. / DepthDistanceLocation
Mon, 25 Sep
Mon, 25 Sep 10:22 UTCM 2.6 / 103.5 km28 km19 km al SO de Mina Collahuasi
Tue, 12 Sep
Tue, 12 Sep 18:28 UTCM 2.9 / 139.5 km16 km29 km al NO de Ollagüe
Sat, 9 Sep
Sat, 9 Sep 03:03 UTCM 2.6 / 115.8 km35 km20 km al SO de Mina Collahuasi
Fri, 8 Sep
Fri, 8 Sep 00:38 UTCM 2.6 / 101 km35 km30 km al NO de Mina Collahuasi
Wed, 6 Sep
Wed, 6 Sep 03:55 UTCM 2.6 / 103 km38 km25 km al O de Mina Collahuasi
View all recent quakes
Irruputuncu is a small stratovolcano in northern Chile on the border with Bolivia. It contains 2 summit craters. A small summit lava dome and fumarolic activity are found at the southern crater which measures about 300 m in diameter.

Background:

Irruputuncu is the youngest and most southerly of a NE-SW-trending chain of volcanoes. It was was constructed within the collapse scarp left by a debris avalanche which removed part of the SW flank less than 10,000 years ago.
Later eruptions have filled much of this scarp and produced thick, viscous lava flows on the western flank.

1995 eruption
A small phreatic eruption occurred on 26 November 1995 and ejected dark ash plumes above the summit. This was the first confirmed historic activity of Irruputuncu volcano.

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